package cn.com.agree.order.controller;

import cn.com.agree.order.VO.ResultVO;
import cn.com.agree.order.converter.OrderForm2OrderDTOConverter;
import cn.com.agree.order.dto.OrderDTO;
import cn.com.agree.order.enums.ResultEnum;
import cn.com.agree.order.exception.OrderException;
import cn.com.agree.order.form.OrderForm;
import cn.com.agree.order.service.OrderService;
import cn.com.agree.order.utils.ResultVOUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.CollectionUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

/**
 * Descriptions...
 *
 * @author sun.ys
 * @date 2020/8/23.
 */


@RestController
@RequestMapping("/order")
@Slf4j
public class OrderController {
    
    
    
    @Autowired
    private OrderService orderService;
    
    /**
     * 1. 参数检验
     * 2. 查询商品信息(调用商品服务)
     * 3. 计算总价
     * 4. 扣库存(调用商品服务)
     * 5. 订单入库
     */
    @PostMapping("/create")
    public ResultVO<Map<String,String>> create(@Validated OrderForm orderForm,
                                               BindingResult bindingResult){
        
        if (bindingResult.hasErrors()){
            log.error("【创建订单】参数不正确，orderForm = {}",orderForm);
            throw  new OrderException(ResultEnum.PARAM_ERROR.getCode(),bindingResult.getFieldError().getDefaultMessage());
            
            
        }
        // orderForm -> orderDTO
    
        OrderDTO orderDTO = OrderForm2OrderDTOConverter.convert(orderForm);
        
        if (CollectionUtils.isEmpty(orderDTO.getOrderDetailList())){
            
            log.error("[创建订单] 购物车信息为空");
            throw  new OrderException(ResultEnum.CART_EMPTY);
        }
        
        
        OrderDTO result = orderService.create(orderDTO);
        
        Map<String,String>  map = new HashMap<>();
        
        map.put("orderId",result.getOrderId());
        
        return ResultVOUtil.sucess(map);
    }
    
}
